Packaged roll and protector



July 23, 1940. c. A. Ross PACKAGED ROLL AND PROTECTOR THEREFR Original Filed May 26, 1936 Reuued July 23, 1940 UNITED STATES 21,516 PACKAGE!) BOLL AND PROTECTOR THEREFO Colin A. Ross, Troy.' N. Y., assigner to Behr- Manning Corporation,' Troy, N. Y., a vcorpeluration of Massachusetts Original No. 2,117,995, dated May 17, 1938, Se-

rial No. 81,880, May 26, 1936. Application for reissue March 22, 1940, Serial No. 325,468

3 Claims.

The invention relates to protectors and with regard to its more s'pecic features to protectors for rolls'of sandpaper.

One object of the invention is to provide a protector that shall prevent the damaging of a roll of sandpaper. Another Object of the invention is to provide a protector that can readily be `manufactured at small expense.

of the invention is to facilitate packing of rolls of sandpaper; Another object of the invention is to provide a roll of sandpaper and protectors therefor which can be stood on end without damage. Another object of the invention is positively to protect the edge of a sandpaper roll.

' in the structure to be hereinafter described and the scope of the application of which-will be indicated in the following claims.

In the accompanying drawing, in which is shown one of variouspossible embodiments of the mechanical features of this invention,

Figure l is la plan view of the protector;

Figure 2 is an axial sectional view of a roll of sandpaper wltha protector at each end;

Figure 3 is a perspective view of a package constructed according to theinvention and ready for shipping; and

Figure 4 is an edge View of corrugated paper board from which the protector is made.

Edge damage to a roll of sandpaper is the most serious problem of the manufacturer of sandpaper so far as shipping the same is concerned.

If a roll of sandpaper is placed with its axis parallel to the floor of the vehicle, for example a railway car or a motor truck, the danger of damage is very slight, as has been foundvin actual practice. However, when the freight car or truck is crowded, the railway or truck employees will usually stand the sandpaper rolls 'on end. 'In doing so they are apt to drop the rolls and as they usually do not take care to set them down perfectly straight, the blow received at the edge of the roll causes deformation of a fewvof the outside layers of the abrasive material, producing a crescent shaped cracking. This cracked edge weakens an abrasive drum, cover or belt which is made from the affected portion of the sandpaper. For these and other reasons, edge Another object' (Cl. 20G-59) damage due to shipping is a serious matter to the manufacturer of sandpaper and also abrasive cloth. v

Referring to Figure 4, I provide a large sheet of corrugated paper board. This corrugated paper board preferably comprises a smooth sheet 5 of suitable paper board to one surface of which is adhesively attached a suitable sheet of Apaper board 6 which is corrugated as shown, that is to say, having the shape of a continuous series of waves` Preferably I coat one edge of the board parallel to the corrugations with adhesive, for example sodium silicate or glue. I now, and before the adhesive has completely set, place this odge of the corrugated paper board upon a mandrei and then wind the board.

When a cylinder of spirally wound corrugated board has `thus been produced, I secure the free lend with gummed paper 8. I remove the mandrel and I may now cut disks from the cylinder with a rotary saw or by means of gang saws.

Referring now to the drawing, the numeral IIi designates a protector disk of spirally coiled corrugated paper board, for example of the Order of 1 to 2 inches in thickness. I may make a disk of any diameter less than the diameter of the wound cylinder from which the disks were cut, merely by breaking thel paper seal 8 and unwinding convolutions of the corrugated paper board, cutting, and resealing with a gummed strip of paper.

There is provided a coiled spirally wound roll of sandpaper or other material II which is to be shipped. Referring now to Figure-2, in order notv to crush the first convolution of the sandpaper, an axial hole I2 exists in the inside of the sandpaper roll. I now place a protector disk III at either end of the roll I I and wrap the entire assembly in wrapping paper I4, for example kraft paper, sealing the wrapping along an element of the cylindrical roll II with gummed papertape I5 and folding the paper over each disk IU, sealing with gummed circular paper heads I6.

If desired, I may include a long wooden rod Il in the construction, placing it in the hole I2 with its opposite ends in corresponding central I holes I8 of the disk Ill. However, in many cases the rod I'Imay be omitted or I may substitute short wooden plugs projecting only a short distance into the hole I2 and, if desired, secured in the holes IB with adhesive,'for example glue. In handling the completed package of the present invention, when it is carelessly thrown into position in the freight car or other vehicle, being allowed to drop with its axis at-an acute anglo to the vertical, the corrugated board protectors Il areormaybeslightlycrushedbutatallevents receive the shockl and because they are non-rigid and also deformable. do not transmit the shock to the sandpaper roll Il to such an extentasto result in causing the danger heretofore explained. Therefore, the entire package arrives at its ultimate destination without edge damage and in good condition.

The purpose of applying adhesive at the edge l to the rst convolution at the hole Il is to 'permit the forming of a convolution to be rej ceived by the mandrel and otherwise to assist in the manufacture of the article. 'This step and feature may be omitted, if desired.'

Theprotector disk of the invention is easy to manufacture and its size can be readily changed as explained. Furthermore. the material from which it is constructed is cheap. The entire package can be assembled by packers very quickly and the package is a neat package which is easy to handle and presents an excellent appearance. 'It will thus be seen that there has been provided by this invention articles in which the various objects hereinabove set forth together with many thoroughly practical advantages are successfully achieved. As many possible embodiments may be made of the above invention and as many changes might be made in the embodiment above set forth, it is to be understood that all matter hereinbefore set forth or shown in the accompanying drawing is to be interpreted as illustrative and not in a limiting sense.

`I claim:

1. A package comprising a cylindrical roll of coated abrasive sheet material, a protective device at an end of the said roll and in juxtaposition thereto, said protective device comprising corrugated board spirally wound and in disk shape, the axis of the spiral being the same as the axis of the roll, and wrapping paper wrapped around the roll andover the protective device. thus securing the4 protective device to the end of the roll. Y

2. A protective device for packaged material in cylindrical form comprising a smooth paper board, a paper board with corrugationsadhesively attached to said smooth paper board. the

two constituting corrugated paper board and be- 3; A package comprising acylindrical roll of material, a protective device at an end of said roll and in juxtaposition thereto. said protective device comprising corrugated board spirally wound and in disk shape, the axis of the spiral being the same as the axis of the roll, and wrap.

ping, paper wrapped around the roll and over the protective device, thus securing the protective device to .the end of the roll.

COLIN A. ROSS. 

